t 4 Test: Acceleration and Dynamics Retake A m=12.0 kg object is placed on a bathroom scale in an elevator. a. Draw a free body diagram of the object. Label the forces. Determine the apparent weight (the weight that would show in the scale) of the object if. b. The elevator is at rest.

3. Starting from rest, a 150 kg body experiences a force of 100 newtons acting on it in a direction parallel to the positive x-axis and a force of 150 newtons acting at 55° with respect to the positive x-axis.a. What is the net force acting on the body? Include direction.b. What is the acceleration of the body?c. What velocity does it reach after 5 seconds?

A. Draw the free-body diagram of the object  B. Using Newton's laws find the normal force on the object C. Determine the force of kinetic friction on the object

The same 2.0 kg box is then pulled up a 30° inclined surface, at constant velocity, by a 12.0Napplied force.Q1. Construct a free-body diagram for the box as it is pulled up the incline. Q2. Determine the magnitude of the kinetic friction force and the corresponding coefficient ofkinetic friction.

A block with mass m = 7 kg is pushed with a force of = 50 N. Please answer F1 the following: A. Draw a body diagram representing all forces acting on the block. B. If the coefficient of static friction is = 0.4, does the block move? C. The block now starts moving, if the coefficient of kinetic friction is =0.1 μk find .Fk D. Find the acceleration. E. After t = 3 s , how far did the block move? (the initial position and initial Xi velocity are both zero)Vi F. What is the velocity at t= 3 s ?

Starting from rest, a 150 kg body experiences a force of 100 newtons acting on it in a direction parallel to the positive x-axis and a force of 150 newtons acting at 55° with respect to the positive x-axis. a. What is the net force acting on the body?  Include direction. b. What is the acceleration of the body? c. What velocity does it reach after 5 seconds?

3. Starting from rest, a 125 kg body experiences a force of 150 newtons acting on it in a direction parallel to the positive x-axis and a force of 125 newtons acting at 45° with respect to the positive x-axis. a. What is the net force acting on the body? Include direction. b. What is the acceleration of the body? c. What velocity does it reach after 2.5 seconds?

3. An elevator is moving downward at 1m/s. It is speeding up, with an acceleration of 3m/s². A block with a weight of 40N sits inside the elevator. a) What direction does the acceleration point? b) What is the mass of the block? c) Draw a force diagram of the block, and fill out the force table for the block below. (There are no horizontal forces so we don't need the x column.) Force d) Solve for any unknown forces on the block. y +y 1m/s

You stand next to a wall on a frictionless skateboard and push the wall with a force of 45N. If your mass is 90 Kg. What is your acceleration? Using a rope you are lifting upward at constant speed a bucket of water from a well. All frictional forces are neglected. In this situation, forces on the bucket of water are such that 1. the upward force by the rope is greater than the downward force of gravity. 2. the upward force by the rope is equal to the downward force of gravity. 3. the upward force by the rope is smaller than the downward force of gravity. 4.none of the above. (The water bucket goes up because the rope is being shortened little by little, not because the action of an upward force on the bucket.)

Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wagon. The first child exerts a force of 75.0 N, the second a force of 90.0 N, and the mass of the third child plus wagon is 23.0 kg. Assume no friction in this problem. a. Draw a free-body diagram, including all forces acting on the wagon. b. Show the component equations (Fx and Fy) in terms of variables only. c. Calculate the acceleration.