Drill Variable Speed
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 Ryobi HP412 12V 3 8 Cordless Drill Driver  US $18.00
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 New Laser Guided Heavy Duty 24 V Cordless Drill US $46.40
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 NEW 3 8 CLOSE QUARTER ELECTRIC DRILL US $29.95
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The drill bit of a variable-speed electric drill has a constant angular acceleration of 2.50rad/s^2.?
The drill bit of a variable-speed electric drill has a constant angular acceleration of 2.50rad/s^2. After 4.00s, A) what angle has the bit turned through and B) what is the bit's angular speed?
The formula you need for A) is
angle = (initial velocity) x (time) + 1/2(angular acceleration) x time^2
and for B) is
(final angular velocity) = (initial angular velocity) + (angular acceleration) x (time)
so this question cannot be answered without knowing the initial angular velocity.
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Ryobi HP412 12V 3 8 Cordless Drill Driver US $18.00
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New Laser Guided Heavy Duty 24 V Cordless Drill US $46.40
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NEW 3 8 CLOSE QUARTER ELECTRIC DRILL US $29.95
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