Two carts A and B with a masses m_A = 5 kg, m_B = 3 kg are initially at rest and

Question

Two carts A and B with a masses m_A = 5 kg, m_B = 3 kg are initially at rest and compressing a masses spring. After they are released cart A has a final speed of 3 m/s. The final speed of cart B is________m/s. (ignore friction.) 1 2 3 4 5 A force pulls on two blocks as shown in the figure at the right. The coefficient of state friction between blocks A and B is mu_s = 0.30 and the coefficient of kinetic friction is mu_k = 0.20. The mass of B is 6.0 kg and the mass of A is 1.5 kg. There is no friction between block B and the surface below it. What is the maximum the force F can be, in N, if block A does not slip on Block B? 18 22 27 32 36 Rank the magnitude of the torques about point P due to the force F for the three cases shown: tau_3 = tau_2

Explanation / Answer

(56) Fmax=(m1/m2)s(m1+m2)g= (1.5/6)0.3(1.5+6)9.8= 5.5 N

(57) T1= 3/4 F

T2= FLsin45 = 0,707FL

T3= FL(1/2)

T1>t2>T3 (D)

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