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Mechanics
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Questions (40,202)
a rope is strung between two cliffs. A mountain climber weighing 100 kg is halfway across the rope when the rope forms an angle
7 answers
asked by
Kathleen
5,142 views
A girl pushes a load of mass 20kg to a distance of 10 metres in 5 seconds calculate (1) the work done (2) the energy used (3)
4 answers
asked by
Olorunnimbe
744 views
A particle in simple harmonic motion has a period of 0.4s. If the maximum speed attained during the motion is 0.3s, what is the
4 answers
asked by
Olajumoke
961 views
A hydraulic lift office chair has its seat attached to a piston with an area of
11.2 cm2 . The chair is raised by exerting force
7 answers
asked by
Alexis
7,559 views
A golf ball was hit and projected in an angle of 60 degrees with the horizontal. if the initial velocity of the ball was 50m/s,
6 answers
asked by
YellowCorn
14,470 views
A stone was dropped off a cliff and hit the ground with a speed of 120 ft/s. Using the fact that acceleration due to gravity is
5 answers
asked by
Cole
11,001 views
David can row at 5 m/s in still water. He starts rowing from a point on the south bank of a river that is flowing due east at 3
4 answers
asked by
LE
1,155 views
The change in the momentum of an object (Ä p) is given by the force, F, acting on the object multiplied by the time interval
4 answers
asked by
Casablanca
2,842 views
Two boys A and B are at two diametrically opposite points on a circle. At one
instant the two start running on the circle; A
4 answers
asked by
Collins
2,381 views
A Particle moves along the x-axis so that at any time t>0, its acceleration is given by a(t)= ln(1+2^t). If the velocity of the
5 answers
asked by
D-MO
10,053 views
A spring sketch by 6cm when supporting a load of 15N? By how much would it stretch when supporting a load of 5Kg
7 answers
asked by
Purity
3,078 views
3. A man lifts various loads with the same lever. The distance of the applied force from the fulcrum is 1.00 m, and the distance
4 answers
asked by
Tim
5,275 views
figure 3.1 shows a rectangular concrete slab of weight 18000N. It rests on a brick wall and is the roof of a bus shelter. The
6 answers
asked by
Atta
4,083 views
An object projected horizontally from the top of a cliff with a velocity of 7 metre per second and land on the ground level a
5 answers
asked by
Favour
1,744 views
A radar gun was used to record the speed of a car (in feet per minute) during selected times in the first 2 minutes of a race.
5 answers
asked by
Deondre
4,158 views
a man having a mass of 60 kg exerts a horizontal force of 200 newton in pushing a 90 kg object a distance of 60 meters along
5 answers
asked by
komal yaseen
4,199 views
A uniform AB weighing 40g can be balanced horizontally on a knife edge at 2 cm from the end A when mass of 60 is hung from this
5 answers
asked by
Janeth
976 views
A spring gun is made by compressing a spring (assumed to be perfect) and latching it. A spring of constant k = 60 N/ m is used
5 answers
asked by
Nazgul
2,549 views
An airplane is heading due east with an airspeed of 220km/h when it encounters a wind from the south at 76km/h. What is the
5 answers
asked by
Sara
2,001 views
A load of 4N extends a spring by 10mm. What load would extend it by 15mm?
5 answers
asked by
Luyando
756 views
Consider a ballistic pendulum experiment in which the mass of the ball (bullet) and the pendulum cage (block) are the same. What
4 answers
asked by
Kelly
1,438 views
a stone is thrown at an angle of 30 degrees above the horizontal from the top edge of a cliff with an initial speed of 12m/s. a
4 answers
asked by
S
3,400 views
A body ovlf mass 100kg is placed in a liftfind the reaction between the floor of the lift and the body when the lift moves
1 answer
asked by
Victoria
407 views
a sitealite is orbiting Earth at an orbital radius of 3.9×103 m. What is its velocity in terms of G and the mass of Earth, mp?
5 answers
asked anonymously
97 views
a persons heart and head are 1.3 meter and 1.8 meter above the feet,respectively.determine the potential energy of 0.5 kg of
3 answers
asked by
rodel
427 views
A 120-MT concrete beam is lifted from the floor by two tandem heavy lift cranes up to a
target height of 7.5 meters. Calculate
1 answer
asked anonymously
108 views
Thank you Advance...;;
Q: A body of mass 10 kg is moving over a smooth surface, whose equation of motion is given by the
6 answers
asked by
abodd
3,637 views
the normal acceleration of a particle on the rim of a pulley 10 ft in diameter is constant @ 8000 ft/s^2. determine the speed of
4 answers
asked by
fatz
5,076 views
A 1200 kg car is moving at 95 km/h when the driver notices a deer down the road. He immediately moves his foot toward the brake
5 answers
asked by
Caroline
6,472 views
A 0.5kg cart connected to light spring for which the force constant is 20 Nm on horizontal frictionless air track. Calculate the
5 answers
asked by
Anonymous
7,602 views
A solid cylinder with a radius of 5.08 cm starts from rest at the top of a 12m long ramp inclined 20.3 degrees above the
5 answers
asked by
Anonymous
2,562 views
An object , constrained to move along the x-axis is acted upon by a force F(x)=ax + bx^2 where a=5N/m , b=-2m/s
The object is
6 answers
asked by
Anonymous
3,113 views
Torque is not zero due action and reaction force true or false
5 answers
asked by
Sawai
1,847 views
A car initially at rest travels for 2 minutes with a uniform acceleration of 0.3 m/s^2,after which the speed is kept constant
5 answers
asked by
Bernard
1,107 views
An airplane has a speed of 400 km/h with no wind. The airplane flies 2140 km with the wind. The airplane can only fly 1860 km
4 answers
asked by
Muneer
2,171 views
A body is thrown vertically upward from the ground with an initial velocity of 96 ft/sec. Find the maximum height attain by the
5 answers
asked by
gillian
5,912 views
A spring with a force constant of 111 Nm is attached to the ceiling. When an unknown mass is attached it pulls the spring down
4 answers
asked by
anonymous
1,432 views
a rock is dropped from a high brige.at the end of 3 seconds of free fall the speed of the rock is:[in centimeters per
5 answers
asked by
komal
5,505 views
The blade of a windshield wiper moves through an angle of 90.0° in 0.398 s. The tip of the blade moves on the arc of a circle
7 answers
asked by
vik
9,992 views
An object with mass 3.0 kg is attached to a spring with spring stiffness constant k = 300 N/m and is executing simple harmonic
7 answers
asked by
Nicole
16,886 views
A stone is suspended from the free end of a wire that is wrapped around the outer rim of a pulley, as shown in the figure (see
4 answers
asked by
Anonymous
12,494 views
A body of mass is 5kg moving with a velocity of 20m due south hits a stationary body of mass is 3kg if they move together after
5 answers
asked by
Amara
3,688 views
A man enters a tall tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the
6 answers
asked by
Ame
8,802 views
Water drives a waterwheel (or turbine) of radius 3.0m. The water enters at a speed of v1 = 7.0 m/s and leaves at a speed of v2=
5 answers
asked by
Odd
5,092 views
A block and tackle having a velocity ratio of 5 is used to raise a load of 400N through a distance of 10m. If the work done
6 answers
asked by
Michael Nyame
3,638 views
A spring of natural length 30cm is stretched to 35cm by a load of 15N. Calculate the extension produced,the elastic constant of
5 answers
asked by
Anonymous
1,303 views
A bottle full of a water has amass of 45g; when full mercury its mass is 360g. If the mass of the empty bottle is 20g calculate
5 answers
asked by
Azar
2,115 views
The driver of a 1.00X103 kg car traveling on the interstate at 35.0 m/s slams on his brakes to avoid hitting a second vehicle in
4 answers
asked by
kate
3,943 views
¬Calculate the period of oscillation of a simple pendulum of length 1.8 m, with a bob of mass 2.2 kg. What assumption is made
4 answers
asked by
Anonymous
2,112 views
Two bodies a and b masses 4kg and 2kg move towards each other with velocities 3m/s and 2m/s and collide. If the collision is
3 answers
asked by
wealth
1,401 views
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