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Madhu Rege
Asked: 2022-11-09T03:24:02+05:30 In:

A cuboid of height 10 cm, width 5 cm and 8 kg is kept on a rough horizontal ground as shown . The ground is so rough that we can assume that the questions indicated below. A boy applies a horizontal force F at the top edge of the cuboid.
image
What is the friction force exerted by the ground in the previous question ?
A. `2N to `
B. `20 N larr`
C. `4N to `
D. `13.12 N larr`

A cuboid of height 10 cm, width 5 cm and 8 kg is kept on a rough horizontal ground as shown . The ground is so rough that we can assume that the questions indicated below. A boy applies a horizontal force F at the top edge of the cuboid.
image
What is the friction force exerted by the ground in the previous question ?
A. `2N to `
B. `20 N larr`
C. `4N to `
D. `13.12 N larr`
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1 Answer

  1. Answer:
    `F-f =ma_(cx)=mh/2 alpha`
    `20-f=8xx1/20xx60`
    `f=4N to `

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