Important questions
5 important questions on Important questions
(26a) Explain if a spring balance gives the same readings on the moon as on the earth.
no, on the moon gravity is less than on the earth.
(26b) Explain whether a bathroom scale gives exatcly the same value at every place on earth.
no, the earth is a slightly flattened ball, as a result, at the poles the earth's gravity is sligthly greater than at the equator.
(26c) Explain if an equal arm beam balance gives the same value on the moon as on earth.
on the moon boththe object you are measuring and the mass pieces on the balance has a six times smaller weight. on the moon the balance is t equilibrium as the same mass pieces as on earth.
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(36)you want to lift a 1kg bucket containing 5l of water. calculate the minimum force you need.
the total mass is: 6 kg (the mass of 1l water is 1kg).
the earth exercises a force of 6kg x 10 N/kg= 60 N upon it.
hence you must exert at least 60 N on the bucket.
(40) Fritse cannot get a nut off his bike with a ring spanner which two possibilities does he have to remove the nut without damaging it?
Fritse can take a hammer and momentarily exercise a large force upon the ring spanner. he could also use a a longer ring spanner so that the arm becomes longer.
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