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Q. Review Conceptual before starting this problem. A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.10 m of the plank hanging over the right support.To what distance x can a person who weighs 411-N walk on the overhanging part of the plank before it just begins to tip?
Q. The weight of passengers on a roller coaster increases by 58 as the car goes through a dip with a 40.00 radius of curvature. What is the velocity of the cart at the bottom of the track?
suppose that the springs have somehow not yet compressed to their maximum amount. How much are the springs compressed.
The minimum distance required to stop a car moving at 38.0 mi/h is 41.0 ft. What is the minimum stopping distance for the same car moving at 68 mi/h, suppose the same rate of acceleration.
The front 1.20 m of a 1600 kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision.
A force vector has a magnitude of 569 newtons and points at an angle 41o of below the positive x axis. What is (a) x scalar component and (b) y scalar component of the vector.
A train at rest emits a sound at a frequency of 1045 Hz. An observer in a car travels away from the sound source at a speed of 37 m/s.What is the frequency heard by the observer . What must be the result have been for the horizontal speed.
Find the magnitude of total displacement of the object
If 20 grams of hot water at 80°C is poured into a cavity in a very large block of ice at 0°C, what will be the final temperature of the water in the cavity? How much ice should melt in order to cool the hot water down to this temerature.
Now a peg is placed 4/5 of the way down the pendulum's path so that when the mass falls to its vertical position it hits and wraps around the peg. As it wraps around the peg and attains its maximum height it ends a distance of 3/5 L below its startin..
Find out the rate of the wheel's rotation in revolutions per minute that will produce this effect.
What is mechanical energy
The alpha line in the Balmer series of the hydrogen spectrum consists of light having a wavelength of 6.56 ×10-7 meter. Compute the frequency of this light.
Treating our rigid legged friend as a particle, what is the average force his feet exert on the ground as he slows down.
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