SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The weight and mass will remain the same because they are not altered by the effects of gravity.
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The weight will remain the same, but the mass will change because of the effects of gravity.
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The mass will be 76.5 kg, and the weight will increase because of the effects of gravity.
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The mass will be 750 kg, but the weight will decrease because of the effects of gravity.
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Detailed explanation-1: -A rock on Earth has a mass of 750 kg and a weight of 7, 350 N. If the rock is taken into outer space, how will its mass and weight be affected? The weight and mass will remain the same because they are not altered by the effects of gravity.
Detailed explanation-2: -for a mass m = 10kg on Earth it‘s weight is W = mg = 10 x 10 = 100N.
Detailed explanation-3: -1 Expert Answer From Newton’s laws, we have F = m*a. In the MKS system, F is in Newtons, m is the mass in kg., and a is acceleration in m/sec2 . In MKS, the a for gravity is 9.8m/sec2 and so the weight is 5*9.8 = 49 Newtons.
Detailed explanation-4: -The static frictional force on the train is between the wheels and the track.
Detailed explanation-5: -Using knowledge of friction forces, determine if it is easier to push or pull a vacuum cleaner across carpet. Pushing is easier because it reduces the amount of friction due to the decreased normal force on the vacuum.