Guys help me solving this problem coz i need to submit it tomorrow for my univer
ID: 1686547 • Letter: G
Question
Guys help me solving this problem coz i need to submit it tomorrow for my university physics class,,,Thanks...1. A 50-N box is slid straight across the floor at constant speed by force of 25N at 40 degree (a) How large a friction force impedes the motion of the box? (b) How large is the normal force; (c) Find the coefficient friction between the box and the floor? 2. Let the weight of the hanging block be 50lb. Find the tension T2 and T3 (a) if degree 2 = degree 3 = 30 degree (b) if AB = 10ft, AO=6ft, OB 8ft 1. A 50-N box is slid straight across the floor at constant speed by force of 25N at 40 degree (a) How large a friction force impedes the motion of the box? (b) How large is the normal force; (c) Find the coefficient friction between the box and the floor? 2. Let the weight of the hanging block be 50lb. Find the tension T2 and T3 (a) if degree 2 = degree 3 = 30 degree (b) if AB = 10ft, AO=6ft, OB 8ft
Explanation / Answer
1) W = 50NCustom diagram editor doesnt work. Sorry. Positive x axis is in direction ov movement Positive y axis is upwards. we apply II Newton's law for x and y - axes: x: F cos(aplha) - F_fric = 0 (no acceleration -> no net force) )
y: N - W + F sin(aplha) = 0 (body has no acceleration in vertical, y axis)
a) F_fric = F cos(40) = ...
b) N = W - F sin(40) = ... c) F_fric = N mu => mu = F_fric/N = ... Hope you got it... 2)
Cannot answer the task, that statement can be interpreted in several ways I do not know which is correct please post question again with a diagram or scanned picture of situation or upload it on the web somewhere
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