The exercise machine is designed with a lightweight cart which is mounted on small rollers so that it is free to move along the inclined ramp. two cables are attached to the cart - one for each hand. if the hands are together so that the cables are parallel and if each cable lies essentially in a vertical plane, determine the force p which each hand must exert on its cable in order to maintain an equilibrium position. the mass of the person is 61 kg, the ramp angle θ is 24° and the angle β is 28°. in addition, calculate the force r which the ramp exerts on the cart.

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.