Question
part a -b
Student Online HW 04 Begin Date: 92 00:00 PM -Dae Dat (10%) Prvblrn 9: Suppose you have x120-kg wooden crate resting on a' wood floor. The ts of static and kinetic friction 1z0 kg 50% Part (a) what maximum force, in newtons, can you even borvontally on the erate withoot moving it? Grade Sunmary Potestial Saba sioas sin cos) rees Radians Hints: 1% dedicton pir hint. Hrts entatun8L 50% Part (b) If you continue to exert this force once tho crate slarts Io slip what will its acco eration be m nesers per square second? g 0 e 4) The Expert TA 1 HuL @ wl
Explanation / Answer
a) Force = mus N
= 0.5 * 120 * 9.8
maximum force exerted = 588 N
b) f = muk N = 0.3 * 120 * 9.8 = 352.8 N
From newton's second law F - f = m a
588 - 352.8 = 120 * a
acceleration a = 1.96 m/s2