2012 ppt batfink projectile review

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Hugo Ago-go pushes the barrel with Batfink in it towards the end of the cliff with a 85 N force over a distance of 12 m before the barrel leaves the cliff. The force of friction is 7 N. Draw a force diagram of the situation.

y

Fs 735 N

Ff 8 N Fa 85 N x

Fg 735 N

Calculate the acceleration

of the barrel in the xaxis.

SOLUTION:Acceleration of Batfink and the barrel.

mbf = 50 kg amb = 25 kgg = -9.8 m/s2

Fa = 85 NFf = 7 NXi = 0 mXf = 12 m a = 1.04 m/s2

What is the Vf of the

barrel just before it falls

off the cliff?

SOLUTION:Final velocity of Batfink and the barrel while still on the cliff.

mbf = 50 kg amb = 25 kga = 1.04 m/s2

g = -9.8 m/s2

Fa = 85 NFf = 7 NXi = 0 mXf = 12 m Vx = 5 m/s

Batfink is pushed off of the 52 meter

high Canadian Horseshoe Fallstowards the dried up Maid of theMist pool. How much time willBatfink have to escape from thebarrel once it leaves the cliff?

SOLUTION:Maximum time for escape.

Vi = 0 m/s tf

g = -9.8 m/s2 Vf

Yf = 0 mYi = 52 mti = 0 s t = 3.26 s

SOLUTION:Final velocity of Batfink and the barrel.

Vi = 0 m/s Vf

g = -9.8 m/s2

Yi = 52 mYf = 0 mti = 0 s tf = 3.19 s Vf = -31.95 m/s

SOLUTION:Final velocity of Batfink and the barrel.

Vyi = 0 m/s Xf

g = -9.8 m/s2

Yi = 52 mYf = 0 mti = 0 s tf = 3.19 s Xf = 16.3 mVyf = -31.3 m/s