4. Neglecting friction and the mass of the pulley in the picture below, a) Find

Question

4. Neglecting friction and the mass of the pulley in the picture below, a) Find the acceleration with which the 15-kg load is moving up and the 28-kg load is moving down. b) Find the tension in the cord connecting the loads. Show all your work. 28kg 15kg 5. A cable can withstand a maximum load of S0-kg suspended from it. to connect a snowmobile to a 100-kg sled. the sled and the snow is 0.15. In which of the three situation a) The sled is towed by the snowmobi b) The sled is towed at a constant speed up a 10-degree slope? c) The snowmobile towing the sled up a 10-degree slope accelerates at 2 m/s Show all your work. The coefficient of kinetic friction between ile at a constant speed on a horizontal surface?

Explanation / Answer

here,

4)

m1 = 28 kg

m2 = 15 kg

a)

the accelration , a = ( m1 - m2) * g /( m1 + m2)

a = ( 28 - 15) * 9.81 / ( 15 + 28)

a = 2.97 m/s^2

b)

let the tension in the string be T

for m1

m1 * g - T = m1 * a

T = 28 * ( 9.81 - 2.97 ) N

T = 191.6 N

the tension in the cord is 191.6 N

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