1 = 0.5 m W MB M. Rc R, Derive the Formulae for the Above FIXED BEAM Setup for Reaction Rc and Fixing moment MA. Show all working and steps.
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- Many roller coasters have loops where carts roll on a track that curves sharply up into the air. At the top, the people are upside down (and usually screaming). For safety reasons, many of these roller coasters must have a minimum speed at the top of the loop. In the roller coaster shown, the cart must have a minimum speed of 10.0 m/s at the top of the loop to make it around safely a) Assuming the roller coaster starts from rest at the top of the first hill and there is no friction on the roller coaster, what is the minimum height of the first hill? b) What power must be generated to bring a train of cars with a mass of 4560 kg to the top of the hill in 20.0 s?A rock is thrown off a cliff at an angle of51ºwith respect to the horizontal. The cliff is 110 m high. The initial speed of the rock is 30 m/s. a.How high above the edge of the cliff does the rock rise? b.How far has it moved horizontally when it is at maximum altitude? ( c.How long after the release does it hit the ground? d.What is the range of the rock? e.What are the horizontal and vertical positions of the rock relative to the edge of the cliff att= 2.0 s,t= 4.0 s, andt= 6.0 s?I need help with this HW question
- A ball was dropped from the top of a building. If the ball was from a height of 339 meters from the ground, find the speed of the ball 3 seconds after it was dropped. = 0 m/s y t = 3.00 s Select one: a. 3325.5900 m/s b. 0.0289 m/s c. 348.8100 m/s d. 29.4300 m/sPlease explain and give the final answer for this problem. I keep getting wrong answers after calculations.A street ball is dropped onto a hard floor from a height of 16.1 m and rebounds to a height of 1.34 m. a. Calculate its acceleration during contact with the floor if that contact lasts 0.0900 ms. b. What distance did the ball compress during its collision with the floor, assuming the floor is absolutely rigid.
- In a laboratory test of tolerance for high acceleration, a pilot is swung in a circle 15.0 m in diameter. It is found that the pilot blacks out when he is spun at 30.6 rpm (rev/min). At what acceleration (in SI units) does the pilot black out? acceleration: 77.01 m/s? Express this acceleration in terms of a multiple of g. acceleration as a multiple of g: 7.858 If you want to decrease the acceleration by 22.0% without changing the diameter of the circle, by what percent must you change the time for the pilot to make one circle? percent of time change:PROBLEM 15 18. A crate slides down an inclined plane without friction. If it is released from rest and reaches a speed of 6 m/s after sliding a distance of 2.5 m, what is the angle of inclination of the plane with respect to the horizontal? a. 43.22° b. 41.22° c. 45.22° d. 47.22°U m/s'] C. 10 m/s? d. [-5 m/s', 5 m/s] Consider a ball thrown up from the surface of the earth into the air at an angle of 30° above the horizontal. Air resistance is negligible. Just after the ball is released, its acceleration is: a. Upwards at 9.8 m/s? b. Upwards at 4.9 m/s? C. Downwards at 9.8 m/s? d. 0 m/s? A hunter with an air blaster gun is preparing to shoot at a monkey hanging from a tree. He is pointing his gun directly at the monkey. The monkey's got to think quickly! What is the monkey's best chance to avoid being smacked by the rubber ball? a. The monkey should stay right where he is: the bullet will pass beneath him due to gravity. b. The monkey should let go when the hunter fires. Since the guns pointing right at him, he can avoid getting hit by falling to the ground. C. The monkey should stay right where he is: the bullet will sail above him since its vertical velocity increases by 9.8 m/s every second of flight. d. The monkey should let go when the hunter fires. He…