Pulleys

From the diagram determine (a) frictional force (b) acceleration of the system (c) tension in the string (d) net force acting on the 2 dg block. The coefficient of friction is 0.4.

Pulley system

A pulley with one end connected to a 300 gm block and the other connected to an unknown weight(M) has a negligible friction. The tension in the string is given as 2 nt. Determine(a)the acceleration of the 300 gm block. (b) the force acting on the 300 gm block. (c) weight of M in newtons (d) value of the unknown mass M in gms.

acceleration and projectile motion

1) A car starts from rest with an acceleration of 6 m/sec2. After attaining a speed of 30 m/sec it maintains a constant speed. Find (a) the distance traveled in 10 seconds and (b) average speed during in the first 10 seconds. 2)A projectile is fired from the ground with an unknown speed at an angle fo 30 degrees. Its range is 200 meters. Determine (a) initial spped (b) speed at the highest point (c) time of flight

Impulse and Momentum

A small steel ball moving with speed v0 in the positive x-direction makes a perfectly elastic noncentral collision with an identical ball originally at rest. After impact, the first ball moves with speed v1 in the first quadrant at an angle theta1 with the x-axis, and the second moves with speed v2 in the fourth quadrant at an angle theta2 with the x-axis. a) what would be the equations expressing conservation of linear momentum in the x-direction and in the y-direction? What is the outcome if I square and add these? b.) How can I prove that theta 1 + theta 2 = pi/2

x, y-components and magnitude

two cables are supporting a weight of 95 lbs. the force in the cable B is 50 lbs at and angle of 60 degrees. (the two cables come together at an angle of 90 degrees) Determine (a) X-component of vector B. (b) y-component of force A. (c)magnitude of force in cable A. Please explain carefully how to find these. Thanks