pius.coedugeh/student/mainfr.uni Cutnell, Physics, 10e GENERAL PHYSICS(PHYS 2001

Question

pius.coedugeh/student/mainfr.uni Cutnell, Physics, 10e GENERAL PHYSICS(PHYS 2001/2002) Practice Assignment Gradebook ORION Downloadable eTextbook ignment BACK Chapter 04, Problem 086 Your answer is partially correct. Try again. Refer to Concept Simulation 4.4 for background relating to this problem. The drawing shows a large cube (mass 23.0 kg) being accelerated across a horizontal frictionless surface by a horizontal force P. A small cube (mass-3.4 kg) is in contact with the front surface of the large cube and will slide downward unless P is sufficiently large. The coefficient of static friction between the cubes is 0.710. What is the smallest magnitude that P can have in order to keep the small cube from sliding downward? Friction less Number 1T47 the tolerance is +/-2% sHoW HINT LINK TO TEXT 24

Explanation / Answer

Here ,

let the acceleration of the larger block to keep the smaller from falling is a

balancing the forces in vertical direction on the smaller cube

u * m * a = m * g

a = 9.8/0.710

a = 13.8 m/s^2

the acceleration needed is 13.8 m/s^2

Now, for the smallest P

P = (23 + 3.4) * 13.8

P = 364.4 N

the smallest P nedeed is 364.4 N

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