PLEASE WRITE THIS IN COMPUTER, NOT BY HAND. Solve: Show the procedure clear, com

Question

PLEASE WRITE THIS IN COMPUTER, NOT BY HAND.

Solve:

Show the procedure clear, complete and organized. Please do not skip any step or procedure, put everything. Do not use formulas, equations and advanced varials, this is the kind of introduction to physics, that everything is very basic.

1. Determine the centripetal acceleration, in m / s^2, of a car moving at a speed of 40 mph on a curve whose radius is 20.0 m.

2. The period of a stone moving in a horizontal circle with a radius of 50 cm is 1.00 s. Determine (a) its tangential velocity and (b) its centripetal acceleration.

3. Calculate the centripetal force in a car of 1500 kg mass that moves in a curve 100 meters in diameter when it is moving at a speed of 25 m / s.

Explanation / Answer

1)we know centripetal acceleration=a=v^2/r

v=40mph=17.88 m/s

r=20 m

a=(17.88)^2 / 20= 15.98 m/s^2

2)we know

f=1/T=1/1 =1Hz

a) Vt=2*3.14*f*r=2*3.14*1*0.5=3.14 m/s

b) a=v^2/r = (3.14^2)/0.5 = 19.72 m/s^2

3)Fc= ma=1500*25*25/50=18.75 kN

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