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Vinvika [58]
3 years ago
12

. When using straight ladders, the base of the ladder should be _____ away from the wall or other vertical surface for every ___

__ of height to the point of support.
Physics
2 answers:
nalin [4]3 years ago
8 0
<h3><u>Answer;</u></h3>

one foot; four feet

<h3><u>Explanation</u>;</h3>
  • When using straight ladders, the base of the ladder should be <u>one foot</u> away from the wall or other vertical surface for every <u>four feet</u> of height to the point of support.
  • The Four-to-one rule ladder safety requires that for every four feet of height climbed, move the base one foot away from the wall.
  • <em><u>It is always important to remember the 4-to-1 rule for ladder safety so as to avoid home improvement injuries.</u></em>

guapka [62]3 years ago
3 0

one foot; four feet is the answer

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4 years ago
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The mass of the kid and the sled is 50.0 kg

Explanation:

The sled starts to move when the force applied becomes larger than the maximum force of static friction, which is given by

F_{max} = \mu_s mg

where

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Here the sled starts moving when the force applied is 61.2 N, so

F_{max}=61.2 N

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Therefore, we can find the mass of the kid and the sled by re-arranging the equation:

m=\frac{F_{max}}{\mu_s g}=\frac{61.2}{(0.125)(9.8)}=50.0 kg

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4 years ago
a 0.0780 kg lemming runs off a 5.36 m high cliff at 4.84 m/s. what is its kinetic energy when it's 2.00 m above the ground
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5.01J = 1.53J + KE_2

KE_2 = 3.48J

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