Alex is asked to move two boxes of books in contact with each other and resting

Question

Alex is asked to move two boxes of books in contact with each other and resting on a frictionless floor. He decides to move them at the same time by pushing on box A with a horizontal pushing force F p = 8.0 N. Here box A has a mass mA = 14.5 kg and box B has a mass mB = 7.0 kg. The contact force between the two boxes is F c and N denotes the normal force. (a) What is the acceleration of the two boxes? m/s2 (b) What is the force exerted on mB by mA? N (c) If Alex were to push from the other side on the 7.0 kg box, how would your answer to part (b) change? N Will the contact force be larger, smaller, or the same in this case? larger smaller the same

Explanation / Answer

a) acc=F/(ma+mb)=.372 b)F(mb on ma)=acc*mb=2.6 N c)F'=Fp-mb*acc=5.4

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.