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  3. 8th Class
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  5. Force and Pressure

8th Class Science Force and Pressure Question Bank Force and Pressure Formative Objective Problems

  • question_answer
    In a game of tug-o-war. Mark pulls the rope with a force of 60 N from the right. Sandy and George pull the rope with respective forces of 40 N and 20 N from the left, as shown in the given figure.  The net force on the rope is 

    A)  10 N    

    B)  2 N  

    C)  60 N                     

    D)  120 N  

    Correct Answer: A

    Solution :

      In order to answer this question, the student must determine the net force acting on the rope. The total force on the rope toward the right is 60 N, i.e., applied by Mark. The total force on the rope toward the left is \[40\text{ }N+20\text{ }N=60\text{ }N,\]i.e., applied by Sandy and George. Hence, the net force on the rope is 60 N - 60 N = 0 N. The correct answer is A.   


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