the boom in the crane of the figure is free to pivot about point and is supported by the cable that joins halfway along its 18- total length. The cable passes over a pulley and is anchored at the back of the crane. The boom has mass 1600 distributed uniformly along its length, and the mass hanging from the end of the boom is 2150 . The boom makes a

Imagine hanging from a chin-up bar and beginning a chin-up. Which of the following velocity versus time graphs best represents the first part of your motion (from being at rest to being approximately halfway to the bar)? Assume you are trying to do the chin-up as quickly as possible.

a 2.50 kg beverage can is thrown directly downward from a height of 4m with an initial speed of 3m/s. the air drag on the can is negligible. What is the kinetic energy of the can a. as it reaches the ground at the end of its fall and b.when it is halfway to the ground? c. the kinetic energy of the can andd. the gravitational potential energy of the can-earth system 0.200s before the can reaches the ground? for the latter take the reference point y=0to be at the ground

1975M2. A bicycle wheel of mass M (assumed to be concentrated at its rim) and radius R is mounted horizontally so it may turn without friction on a vertical axle. A dart of mass mo is thrown with velocity vo as shown above and sticks in the tire. a. If the wheel is initially at rest, find its angular velocity w after the dart strikes. b. In terms of the given quantities, determine the ratio: final kinetic energy of the system initial kinetic energy of the system

Suppose the -6.00 charge is released from rest at the point = (0.925) and = (1.17). When it is halfway to the origin, is its speed greater than, less than, or equal to the speed found in part A

Action potentials are normally generated at the axon hillock and propagated down the axon away from the cell body. If you experimentally depolarized an axon to the threshold level at a point halfway down the axon, what would happen?

M is a metal; X is a non-metal. Upon strong heating of 0.5000g of MXO3(s), it decomposes forming MO(s) and XO2(g). Then, all of the MO(s) was dissolved in water and excess acid, 100 mL of 0.120M HCl was added. The resulting solution required 40.0 mL of 0.050 M NaOH for complete neutralization. The rate of effusion of the XO2(g) was found to be 0.797 times that of N2(g) at the same temperature. a. Find the number of moles of MO(s) formed.

A small ball rolls around a horizontal circle at height y inside a frictionless hemispherical bowl of radius R. Find an expression for the ball's angular velocity in terms of R, y and g. Q1) Find an express for the ball's angular velocity in terms of R,y and g. Q2) What is the minimum value of w for which the ball can move in a circle? Q3) What is w of R = 20 cm and the ball is halfway up?