3 years ago

A man ran the 200m race within 19.19 seconds. Calculate the speed of the man during the race

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1 answer:

natta225 [31]3 years ago

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Answer:

around 23 miles per hour

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A 37 N block rests on a horizontal surface. The coefficients of static and kinetic friction between the surface and the block ar

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The frictional force acting on the block is 14.8 N.

Explanation:

Given that,

Weight of block = 37 N

Coefficients of static = 0.8

Kinetic friction = 0.4

Tension = 24 N

We need to calculate the maximum friction force

Using formula of friction force

$f=\mu mg$

Put the value into the formula

$f=0.8\times37$

$f=29.6\ N$

So, the tension must exceeds 29.6 N for the block to move

We need to calculate the frictional force acting on the block

Using formula of frictional force

$f = \mu N$

Put the value in to the formula

$f=0.4\times37$

$f=14.8\ N$

Hence, The frictional force acting on the block is 14.8 N.

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