Solution Found!
The block brake consists of a pin-connected
Chapter 8, Problem 8-7(choose chapter or problem)
The block brake consists of a pin-connected lever and friction block at B. The coefficient of static friction between the wheel and the lever is\(\mu_{\mathrm{s}}=0.3\), and a torque of 5 N \(\cdot\) m is applied to the wheel. Determine if the brake can hold the wheel stationary when the force applied to the lever is (a) P = 30 N, (b) P = 70 N.
Questions & Answers
QUESTION:
The block brake consists of a pin-connected lever and friction block at B. The coefficient of static friction between the wheel and the lever is\(\mu_{\mathrm{s}}=0.3\), and a torque of 5 N \(\cdot\) m is applied to the wheel. Determine if the brake can hold the wheel stationary when the force applied to the lever is (a) P = 30 N, (b) P = 70 N.
ANSWER:
Problem 8-7
The block brake consists of a pin-connected lever and friction block at B. The coefficient of static friction between the wheel and the lever is , and a torque of 5 is applied to the wheel. Determine if the brake can hold the wheel stationary when the force applied to the lever is (a) P = 30 N, (b) P = 70 N.
Step by Step Solution
Step 1 of 10
In order for the break to hold the wheel, friction force at B must be less than its maximum friction force
(A) First, we’ll isolate and draw the free-body diagram of the wheel .