Recent content by rphmy

A 75-kg trampoline artist jumps vertically upward from the top of a platform with a speed of 5.0 m/s. (a) how fast is he going as he lands on the trampoline 3.0 m below (Fig. 6-23)? (b) If the trampoline behaves like a spring of spring constant 5.2x10^4 N/m, how far does he depress it?

A 55-kg hiker starts at an elvation of 1600 m and climbs to the top of a 3100-m peak. (a) What is the hiker's change in potential energy? (b) What is the minimum work required of the hiker? (c) Can the actual work done be more than this? Explain

V1–V2 +V3 = 2i+2j+3k, V1– 2V2-2V3 = -5i+7j+8k, and V1+V2+V3 = 4i-2j-k a) Find V1,V2, and V3 b) Find V=V1+V3 in terms of its components. What is the magnitude and direction of V? All I know is that they are three dimensional vectors. Any help will be much appreciated

This is the problem: Three blocks on a frictionless incline are in contact with each other as shown in the following figure. A force F is applied to block 1 (mass m1), so the whole system moves up the incline. a) Draw a free body diagram for each block. b) Determine the acceleration of the...