The iron door of a building is 3m broad. It can be opened by applying a force of 100N normally at the middle of the door. Calculate (a) the torque needed to open the door, (b) the least force and its point of application to open the door.
Text Solution
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To solve the problem step by step, we will calculate the torque needed to open the door and then determine the least force required along with its point of application.
### Step 1: Understand the Problem
We have an iron door that is 3 meters wide. A force of 100 N is applied at the middle of the door to open it. We need to calculate:
(a) The torque needed to open the door.
(b) The least force and its point of application to open the door.
### Step 2: Calculate the Torque (Part a)
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ICSE-FORCE -EXERCISE 1( C) Multiple Choice questions
