Two forces, one equal to 15 N and another equal to 40 N, act on a 50-kg crate resting in a horizontal surface as shown in figure 2.55  a) what is the net horizontal force on the crate? b) what is it's horizontal acceleration? c) if the crate starts from rest , what is the horizontal speed after 5s? d) How far has the crate traveled along the surface in this time?

1. An object of mass 45 kg is drawn upward an inclined plane by a force of 600N. The coefficient of friction between the object and the plane is 0.56. angle of inclination of the plane is 30o to the horizontal a). what is the acceleration of the object? b). if at the top of the plane, the object slide down freely on the plane under its own weight, with i. what acceleration and ii. velocity does it strike the ground? c) what would be the acceleration if the plane was frictionless?

Why do we use cos 0 degrees when we calculate external force?

Imagine a box which is on a slanted surface as in the diagram. A cable holds the box in place. The box has a mass of 9.1 kg and the surface makes an angle with the horizontal which is 60 degrees. A) What is the tension? B) What is the normal force acting on the box? C) Without the cable what would be the accleration of the box?

Please anwer in 30 min. I will upvote.

Question 3 Suppose that the kinetic coefficient of friction between stone and grass is 0.7. A girl is sliding a stone cube (with mass = 8 kg) along the grass with a force of 72 N. What is the net force on the stone? Hint: This problem will require 3 steps! First, find the normal force that the grass is exerting on the stone by setting it equal to the gravitational force that the stone experiences. Next, use that force to calculate the force of kinetic friction as the stone slides. Last, can you find the net force that results from the push vs. the kinetic friction forces?? A Moving to the next question prevents changes to this answer. 80 DII esc F3 F4 F5 F6 F7 F8 F9 F10 F11 23 $ & 3 7 8 Q E R T Y U tab A D F H J K os lock C V M ntrol option command command ...-

A man is pulling up on a rope which is redirected around a massless frictionless pulley. The box is partially resting on the floor. The elevator is traveling upwards but slowly  a) imagine a scale is placed under the box. Which of these forces on the box represents what the scale reads? b) solve for the scale reading w the following values: m=10kg, a=2m/s^2, force of box on rope = 5N, force of box on man = 600N c) what is the 3rd law reaction pair to Force of box on earth in 2 subscript notation?

Two masses, m1 and m2 are connected by a frictionless pulley and a massless string (idealpulley system). One mass, m1 sits on a 25o incline that is also frictionless, the other mass issuspended in air, as shown in figure 2. The mass on the incline (m1) has a mass of 5kg. Bothmasses are at rest.a) Draw a free-body diagram for both masses.b) What is the value of m2?