B. What is the magnitude and A boy sits on a tire swing that is attached to a rope. The rope passes over a pulley fastened to the ceiling, and then passes back down to the boy's hands. If the weight of the boy plus the tire is w, what is the force with which the boy must pull on the free end of the rope to support the tire?

E6. A 6-kg block being pushed across a table by a force P has an acceleration of 4.0 m/s^2. a. What is the net force acting upon the block? b. If the magnitude of P is 30 N, what is the magnitude of the frictional force acting upon the block?

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

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?

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

If you stand on a scale at the equator, the scale will read slightly less than your true weight due to your circular motion with the rotation of the earth.a. Draw a free-body diagram to show why this is so.b. By how much is the scale reading reduced for a person with a true weight of 800 N?

A block resting on a plane inclined at an angle 36o from the horizontal is being held in place by steel cables a, b, and c as shown in the figure below. The tension in cable b is 75.0 N. Note that cable a is parallel to the surface of the incline and that cable b is perfectly horizontal. a. determine the normal force N and the force due to gravity ??.b. What is the mass of the block in kilograms?

Two objects of masses m1 and m2, with m1 greater than m2, are connected by a string and sit on a perfectly smooth horizontal surface. Mass m2 is to the right of mass m1. A horizontal force F, directed to the right, is applied to m2, accelerating the bodies to the right. Which statement correctly describes the magnitude of the tension force in the string connecting the two masses? a. The tension is less than F but greater than zero. b. The tension equals F. c. The tension equals zero. d. The tension is greater than F. e. An expression for the tension magnitude cannot be determined without more information.

You push a lawnmower (mass=15kg) across the lawn at constant speed. To do so, you must excert 200 N of force. The handle makes a 35° angle with the horizontal.  A. Draw the force diagram B. What is the x-component of the force you apply? C. How does it compare to the frictional force which opposes your effort? Explain. D. If the frictional force is reduced to 100 N, determine the acceleration of the lawnmower.