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Mechanics
Page 7
Questions (40,031)
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
1,378 views
Physics A Semester Online Practice
1. A wall measures 4.20 m ± 0.01 m by 3.10 m ± 0.02 m. What is the approximate percent
2 answers
asked by
Anonymous
421 views
A 20 kg cannonball is fired from a 2.4 x 103 kg. If the cannon recoils with a velocity of 3.5 m/s backwards, what is the
3 answers
asked by
Ula
1,569 views
A girl of mass 62kg ran up a flight of 12 steps each 7cm high is 5 second.fine the power she used (g=10ms~2)
7 answers
asked by
Adefemi adebiyi
604 views
A cart full of packages weighing 180 pounds is rolling down a ramp 12 feet long at an incline of 25° (the force applied by
4 answers
asked by
Elise
694 views
A mass m is attached to a spring of constant k. The spring oscillates in simple harmonic motion (amplitude A). In terms of A:
a)
4 answers
asked by
Joe
622 views
A box sliding down a frictionless plane inclined at an angle 35 degrees with the horizontal. What is the acceleration of the
3 answers
asked by
YESHA
1,094 views
a stone is thrown horizontally from the top of a vertical wall with a velocity of 15m/s, hits the horizontal ground at a point
3 answers
asked by
Josh aile
1,031 views
What is the advantage of class 3 lever?(1 point)
Responses It increases the mechanical advantage compared with other levers. It
6 answers
asked by
the real BARNY THE DINO :)
212 views
9. The flywheel shown in Figure 14.8 may be considered to be a steel
cylinder (density 7800 kg m−3) of outer radius 40 cm and
1 answer
asked by
Shrish
473 views
A turtle moves 3.5m [E] in 136 s and then moves 1.7m [W] in 88 s.
a) What is the average speed of the turtle? b) What is the
5 answers
asked by
Anonymous
553 views
variable force given as F→=2yi^+7xj^ moves a particle along a parabolic given as y=3x2 from the origin (0, 0) to a point (3,
1 answer
asked by
LørdySmårt1SS
49 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
3,594 views
A sled of 6 kg mass is moving along a smooth, horizontal ice surface with a velocity of Vo. A force of 36 N is applied to the
5 answers
asked by
Alisha
1,209 views
What is the significance of the fact that both the horizontal force and motion are both forwards?
4 answers
asked by
Diane
787 views
A 75 kg water skier is pulled by a horizontal tow rope. She goes from rest to 6.0 m/s in 4.5 s when the rope's tension is 140 N.
4 answers
asked by
amalia
881 views
A 22.0 kg child plays on a swing having support ropes that are 2.00 m long. A friend pulls her back until the ropes are 45.0 ∘
4 answers
asked by
Justin
8,231 views
At t = 0, a wheel rotating about a fixed axis at a constant angular acceleration of –0.40 rad/s^2 has an angular velocity of
5 answers
asked by
Jared
7,950 views
You drive down the road at 39 m/s (88 mi/h) in a car whose tires have a radius of 34 cm.
What is the period of rotation of the
6 answers
asked by
anonymous
6,054 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
5 answers
asked by
Annah van tonder
1,094 views
A disk of radius 12 cm, initially at rest, begins rotating about its axis with a constant angular acceleration of 7.8 rad/s2.
5 answers
asked by
Kayla
2,105 views
The cannon on a pirate ships shoots cannon balls with a speed of 350m/s (the muzzle velocity). The cannon can be adjusted to
4 answers
asked by
satvik
186 views
A student wants to determine the effect of mass on kinetic energy. She will drop two balls of the same size into a pool of
6 answers
asked by
Connexus
3,126 views
Water is pulled up from a well in a bucket on a rope the winds on a cylindrical drum 15cm in diameter it takes 28turns of the
7 answers
asked by
Tye
2,530 views
A 1000kg load is suspended from the end of a horizontal boom. The boom is supported by a cable that makes an angle of 35deg with
5 answers
asked by
Shaila
2,896 views
A track consists of a frictionless incline plane, which is a height of 0.5m, and a rough horizontal section with a coefficient
4 answers
asked by
Gwladys
4,054 views
Calculate the resultant of five coplanar forces of values 10N,12N,16N,20N,15N acting on an object at 0
9 answers
asked by
Jane
3,511 views
A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 1.0 J
5 answers
asked by
Dan
6,012 views
m1 = 2.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 40 N/m) as shown in
5 answers
asked by
mary
4,131 views
What is the effect of using an inclined plane to lift an object?
7 answers
asked by
Linda Emory
91 views
The graph in Figure 10-22 shows the force and displacement of an object being pulled.
Figure 10-22 (a) Calculate the work done to
6 answers
asked by
Manny Aragon
2,511 views
The displacement of a particle with a mass of 225 g depends on time and is described by the function x(t) = -3.0t3 + 2.0t2 +
3 answers
asked by
Deadrea
121 views
A 2.00-kg sphere is rotating about an axis through its center at 40.0 rev/s with the angular velocity in the +z direction. A
4 answers
asked by
Elyse
2,183 views
a hockey stick has a mechanical advantage of 4. if the effort arm(which is the distance between the fulcrum and your pushing
4 answers
asked by
-haya-
1,200 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
1,085 views
A tennis ball is projected vertically upwards from the top of a 55 m cliff by the sea. Its height from the point of projection,
5 answers
asked by
Mishka
2,566 views
A brick with a mass of 6kg is dropped vertically from a certain height.it takes 4,5 seconds for the brick to reach the
4 answers
asked by
Peter
1,045 views
A stone of mass 20g is projected vertically upward with a catapult whose rubber has a force constant of 72Nm-1. If the tension
7 answers
asked by
Bukky
3,357 views
An 8N force stretches a spring to the 20cm mark on a metre rule.if the extension on the spring is 4cm,calculate the original
5 answers
asked by
GEOFFREY
1,375 views
calculate the value of g at 1000m above the surface of the earth. The radius of the earth is 6378.1km
👍 👎
7 answers
asked by
B
815 views
A fly wheel rotates at 300 rev/min.if the radius is 6cm through what total distance does a point on the rim travel in 30 sec.
5 answers
asked by
shoaib
1,749 views
A metre ruler is balanced at the 35cm mark by a 1N weight placed at the 15cm mark. What is the mass of the ruler?
4 answers
asked by
lion
765 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
1,406 views
You drop the rubber ball from height h it bounces back to 60% of its original height. Write an equation you can use to find the
9 answers
asked by
Need Help
4,085 views
a place kicker kicks a football with a velocity of 20.0 minutes per hour and at an angle at 53 degrees
a.how long is the ball in
4 answers
asked by
jared queliza
5,073 views
A falling boulder hits the ground at a velocity of 15 m/s, losing 1,200 kg m/s of momentum to the Earth when it stops. What is
4 answers
asked by
asdf
1,485 views
A disk has a moment of inertia of 3.0x10^-4 and rotates with an angular speed of 3.5 rad/sec. WHat net torque must be applied to
5 answers
asked by
PHYSICS HELP
4,273 views
If a torque on the spindle pulley of a drilling machine is 35 N.m and 30% of this torque is used to overcome friction, Calculate
4 answers
asked by
Mahlatse
547 views
Use the equations below:
P=mv Ek=1/2mv^2 4) A wooden target of mass 2.00kg is suspended from a branch so that it swings freely.
7 answers
asked by
cake
1,269 views
A trunk weighing 562 N is resting on a plane inclined at 30.0o from the horizontal. Find the components of the trunk's weight
4 answers
asked by
Anonymous
896 views
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