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Nezavi [6.7K]
3 years ago
14

What is the weight of an object on the earth with a mass of 70 kg. (g= 10 m/s2)

Physics
1 answer:
Sphinxa [80]3 years ago
5 0

Answer:

700N

Explanation:

mass= 70kg

g=10m/s²

weight=mg

=70×10

=700N

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Answer:

a) T = 608.22 N

b) T = 608.22 N

c) T = 682.62 N

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Explanation:

Given that the mass of gymnast is m = 62.0 kg

Acceleration due to gravity is g = 9.81 m/s²

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= (62.0 kg)(9.81 m/s²)

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When the gymnast climbs up the rope with an upward acceleration of magnitude

a = 1.2 m/s²

the tension in the string is  T - mg = ma (Since acceleration a is upwards)

T = ma + mg

= m (a + g )

= (62.0 kg)(9.81 m/s² + 1.2  m/s²)

= (62.0 kg) (11.01 m/s²)

= 682.62 N

When the gymnast climbs up the rope with an downward acceleration of magnitude

a = 1.2 m/s² the tension in the string is  mg - T = ma (Since acceleration a is downwards)

T = mg - ma

= m (g - a )

= (62.0 kg)(9.81 m/s² - 1.2 m/s²)

= (62.0 kg)(8.61 m/s²)

= 533.82 N

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