A 5kg box is sitting on a floor. a. What is the box’s mass? b. What is the box’s weight? c. What is the normal force acting on the box?

A. 700 N 100 N Dick and Jane stand on a platform of negligible weight, as shown in the figure. Dick weighs 700 N, and Jane weighs 400 N. Jane is pulling down on the rope creating tension in it and supporting some of her weight. Assume the platform is in _equilibrium approximately what is the downward force that Jane is exerting on the platform? ON B. C 370 N D. E. 50 N DICK 33 N JANE 400 N

A 67 kg circus gymnast is suspended in the air by two ribbons which are tied to the ceiling above him. The two ribbons make an angle of 48 degrees withrespect to the ceiling. Assume gymnast is at rest. a. What is the magnitude of the tension force in each of the ropes?b. What is the reaction force associated with the gymnast’s weight?c. If the gymnast suddenly lets go of one of the ropes, what will be the horizontal component of his acceleration just after letting go?

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?

You push a box of mass 27 kg on the frictional horizontal surface of the table.a.Calculate the weight of the box? b.Consider kinetic friction coefficient as 0.3, Calculate kinetic friction force? c. If the applied force is 120.0 N. Calculate the acceleration of the box?

Two forces are simultaneously acting on a 4.0 kg object on top of a frictionless surface. The forces are 12 N upward and 16 N to the right, yielding a net force as shown in the figure. NET FORCE. What is the magnitude of the net force F? 12 N 4.0 kg A. 5.3 N OB. 11 N OC. 20 N OD. 28 N E. 400 N 8 16 N F. net +X

24. A pickup truck with mass 980 kg is initially at rest. The truck accelerates to a speed of 95 km/hr within a distance of 60 meters. What the direction and size of the force that acts on the truck? a. b. If the truck were carrying a load of 200 kg, what new force would be required to achieve the same acceleration?

5. A 3 kg book is held against a wall with a force F at an angle of 30° as shown below. The coefficient of friction of the wall with the book is 0.3. A. Draw a free body diagram for the book. B. Determine the minimum force F needed for the book not to slide down the wall.

A 10-kg wooden box rests on a ramp that is lying flat. The coefficient of static friction is 0.50, and the coefficient of kinetic friction is 0.30. What is the friction force between the box and ramp if a 30 N horizontal force is applied to the box? A.50 N B.20 N C.0 N D.30 N