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Mechanics
Page 10
Questions (40,202)
In order to weight a boy in the laboratory a uniform plank of wood A B 3.0m long, having a mass of 8.0kg is pivoted about a
9 answers
asked by
Sekou
821 views
A 4 kg mass and a 9 kg mass are being held at rest against a compressed spring on a frictionless surface. When the masses are
4 answers
asked by
Matt
2,662 views
A ball of mass 100g approaching a tennis player with a velocity of 10m/s, is hit back in the opposite direction with a velocity
4 answers
asked by
Mac FERGUSON
408 views
An aircraft takes off at an angle of 5.2degree to the ground how high is it when it has moved 2000meter horizontally from its
4 answers
asked by
Abrahsm
559 views
a worker on the roof of a building that is under construction dropped a 0.125 kg wrench over the edge. another workman on the
4 answers
asked by
lomonoyan
1,699 views
A 5.00kg ornament is hanging by a 1.2m wire when it is suddenly hit by a 3.00kg missile traveling horizontally at 10.0 m/s. The
4 answers
asked by
Brandi
1,614 views
A machine with a velocity ratio of 30 moves a load of 3000N when an effort of 200N is applied.the efficiency of the machine is
7 answers
asked by
chioma
3,512 views
A car goes around a curve on a road that is banked at an angle of 30 degrees. Even though the road is slick, the car will stay
4 answers
asked by
Dwight
2,847 views
A car of mass 760kg travels with a velocity of 14ms-1
If the brakes are applied,the car travels a distance of 55m before coming
4 answers
asked by
Alos
773 views
A box weighing 20N, resting on a ramp, is kept at equilibrium by a 4-N force at an angle of 20 to the ramp, together with a
4 answers
asked by
Connie
1,137 views
A skier of mass 110 kg travels down a frictionless ski trial. a.) If the top of the trail is a height 200m above the bottom,
4 answers
asked by
Jessica
2,136 views
A roller-coaster car is moving at 20.0 m/s along a straight horizontal track. What is its speed after climbing a 15.0 m hill?
5 answers
asked by
Roller coaster Q-6
1,828 views
A car starting from rest is accelerated uniformly to a velocity of 100.8km/h.A Break is applied in 4 second
Find its acceleration
4 answers
asked by
Fatima
510 views
the load which a crane can lift up is directly proportional to the mass and inversely proportional to the height throught which
4 answers
asked by
Abbie
389 views
The moment of inertia of a solid uniform sphere of mass M and radius R is given by the equation I=(2/5)MR2 . Such a sphere is
4 answers
asked by
Anonymous
4,193 views
Hi,
I'm stuck with the following question: The acceleration due to gravity on Mars is only 3.75m/s^2. You would like to modify an
4 answers
asked by
Grace
1,443 views
A cricket ball of mass 0.4 kg moving with a velocity of 72 km/h is brought to rest by a player. Find the magnitude of the
3 answers
asked by
nidhi
1,138 views
a car of mass 100 kg traveling at 72 km/hr is brought to rest by applying the brakes.assuming that the kinetic energy of the car
4 answers
asked by
ing-marie
1,405 views
A plank AB 3m long weighing 20kg with its centre of gravity 2m from the end A carries a load of mass 10kg at the end A. it rests
4 answers
asked by
Emmanuel
321 views
A satellite orbits the earth at an altitude of 700 km on the equatorial plane
of the earth and it revolves in the same direction
3 answers
asked by
ashitha
510 views
Two satellites S1 and S2 orbit around a planet P in circular orbits of radii r1 = 5.25 106 m, and r2 = 8.60 106 m respectively.
6 answers
asked by
Young
3,917 views
a ball is dropped on the ground.The time interval between the 1st and 2nd bounce is 1.2s.The interval between the 1st and 2nd
5 answers
asked by
eze
1,367 views
A car is moving at the rate of 80km/h. the diameter of its wheel is 60cm. a, find the number of revolutions per minute that the
3 answers
asked by
Ms Kay
895 views
A metre rule is balanced on a knife edge at 55cm mark when a mass of 40g is hung from 95cm maqrk. Find the mass of the ruler?
4 answers
asked by
Lawan
721 views
a resultant force of 5N acts for 5s on a mass of 5kg initially at rest. find the velocity acquired and distance mode
4 answers
asked by
pearl
419 views
The driver pushes the accelerator pedal as far down as possible. The car does not accelerate above a certain maximum speed.
4 answers
asked by
Peter
1,445 views
A rock of mass 5kg is pushed over the edge of a cliff which is 200m high
1.ignore air resistance and calculate the speed of the
4 answers
asked by
Annah van tonder
882 views
a rope hangs over a rough beg of diameter 15cm. The coefficient of the kinetic friction between the rope and the beg is 0.2,
3 answers
asked by
Kulogun Samuel
465 views
as shown in the figure a bullet of mass 0.010 kg moving horizontally suddenly strikes a block of wood of mass 1.5 kg that is
3 answers
asked by
john paul
3,008 views
An engine raises 100kg of water through a height of 60m in 20sec. What is the power of the engine. (Take g=10m/s^2
7 answers
asked by
Chinasaramokwu
2,232 views
A yacht is moving at 10kmh in a south easterly direction and encounters a 3kmh current from the north. Find the actual speed and
3 answers
asked by
Bubbles
987 views
A mass is suspended from a vertical spring and the system is allowed to come to rest. When the mass is now pulled down a
3 answers
asked by
Amy
1,383 views
Two forces of 90 N act on an object. The forces make an angle of 48 degrees to each other. Calculate the resultant force and the
3 answers
asked by
Anonymous
1,490 views
The Moon, which revolves around Earth with a period of about 27.3 d in a nearly circular orbit has a centripetal acceleration of
3 answers
asked by
Quaeme
1,195 views
A. A bowling ball is dropped from a height of 35 feet write a function that gives the height h (in feet) of the bowling ball
4 answers
asked by
Kylet davis
4,623 views
a 50 kg astronautejects 100 g of gas from his propulsion pistol at a velocity of 50 m/s. what is his resulting velocity?
4 answers
asked by
kyla
1,602 views
A particle moves on a straight line. The velocity after t seconds is given by V= 3t^2 – 6t – 8.
The distance of the particle
3 answers
asked by
kudu
2,483 views
Please do an e.g for me by Calculate the force required to move a small piston that has an area of 2m,if the force of a large
4 answers
asked by
Clendar
1,077 views
A labourer raises a load of mass 120kg by using a system of 6 pulleys he exert a force of 400N 400N on the rope calculate
5 answers
asked by
yusuf
474 views
Robin Hood exerted an average force of 100 N in pulling back his bow by 0.5 m. He fired the arrow of mass 0.2 kg vertically
4 answers
asked by
Anonymous
631 views
Calculate the radius of parachute that will slow a 70 Kg person to a terminal velocity of 8 m/s. The person tries to avoid leg
3 answers
asked by
ncphysics
1,074 views
a 10-m uniform beam of weight 100N is supported by two ropes at the ends. If a 400N erson sits at 2.0 m from the left end of the
4 answers
asked by
lulu
4,812 views
A 525-N trunk is placed on an inclined plane that forms an angle of 30.0 degrees with the horizontal. What are the components of
4 answers
asked by
Suzanne
4,641 views
a pupil of mass 50 kg runs a flight of 20 stairs each 25cm high in a time of 20 seconds (take g= N/kg calculate the pupil s gain
4 answers
asked by
Emmanuel
1,084 views
An elastic chord can be stretched to its elastic limit by a load of 8.0N. Assuming it gives an extension 250cm when a load of
6 answers
asked by
Josh
927 views
A ball of mass 522 g starts at rest and slides down a frictionless track, as shown below. It leaves the track horizontally,
3 answers
asked by
brittany
771 views
* 248. Fig. 3.1 shows a firefighter of total weight 840 N in equilibrium at the top of a
ladder that is pivoted at point P. I C
3 answers
asked by
Anonymous
387 views
an elephant of mass 50kg stands with all four feet on the ground. each foot has an area of 0.2m^2calculate the pressure exerted
4 answers
asked by
daniel
717 views
Two banked curves on a highway have the same radius. Curve A is banked at 13 degrees and highway B is banked at 19 degrees. A
3 answers
asked by
Scott
1,257 views
A syringe has an area of 1.4 cm2 at its barrel and then narrows down to an area of 0.08 mm2 at the needle end. If a force of 5.5
3 answers
asked by
Sierra
915 views
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