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A 430 gram rock is whirled on the end of a string 45 cm long which will break under a tension of 22 N.a) What is the highest speed the rock can reach before the string breaks? (Neglect gravity.)a)vmax=4.79 m/sb) If two other strings identical to the first were attached to the rock, how fast could the rock be whirled before the three strings would break?b)4.79*3^.5=8.3m/sNext the rock is held by two of the same 45 cm strings with ends 57 cm apart and whirled in a circle between them. Neglect gravity.c) What is the radius of the circle of motion?d) Now what is the maximum speed the rock can have before the string breaks?
What is the direction of E for points. find the balls initial speed.
In a circus act, a 60 kg clown is shot from a cannon with an initial velocity of 14 m/s at some unknown angle above the horizontal. What is the kinetic energy of the clown as he lands in the net
A swimmer swims in still water at a speed of 5.90 m/s. He intends to swim directly across a river that has a downstream current of 3.17 m/s. What is the velocity relative to the bank
X rays with a wavelength of 0.14nm undergo first-order diffraction from a crystal at a 73 degree angle of incidence. What is the angle of second-order diffraction
A student wants to have $30,000 when he graduates 4 years from now. His grandfather gave him a gift of $10,000. How much must he save each year (to the nearest dollar) if he deposits the $10,000 today
How much work did the movers do pushing a 160 kg crate 10.3 m across a rough floor without acceleration, if the effective coefficient of friction was 0.50.
If the length of the Achilles tendon increases 0.600 cm when the force exerted on it by the muscle increases from 3087 N to 4955 N, what is the "spring constant" of the tendon
At the instant of engine burnout, the rocket has risen to 52 m and acquired a velocity of 40 m/s. The rocket continues to rise in unpowered flight, reaches most height and falls back to the ground.
An aircraft takes off at 203 km/h after accelerating from rest at 2.14 m/s2. What is the minimum runway length required
The velocity vs. time curve of an object is an increasing straight line. What is the acceleration of the object
We will use solar heater as input in steam power cycle for plant. Water initially has temperature of 40 degree, find the Isentropic efficiency of turbine
A man pushes a box of mass M with a force F using a stick AB of mass m and making a angle θ with the vertical. The coefficient of friction between the box and the floor is μ. Draw a clear diagram showing all the forces.
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