Answer:
Explanation:
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Answer:
A combination square is a multi-use measuring instrument which is primarily used for ensuring the integrity of a 90° angle, measuring a 45° angle, measuring the center of a circular object, find depth, and simple distance measurements. It can also be used to determine level and plumb using its spirit level vial.
Explanation:
Answer:
All machines have three fundamental hazards: moving parts, point of operation, and the power transmission.
Explanation:
The unit that supplies power to the machine is a critical hazard due to high energy sources being potential fatal if proper protocols are not followed. This is why lockout tagout (LOTO) measures are put in place in order to protect people while they work on equipment.
Answer:
Logarithmic decrement is equal to 0.182
Explanation:
given,
amplitude decay = 9 dB
number of cycles = 12 cycles
mass of the system = 7 kg
spring stiffness = 3000 N/m
logarithmic decrement = ?
now,
logarithmic decreament = ![ln\ D^{\frac{1}{n}}](https://tex.z-dn.net/?f=ln%5C%20D%5E%7B%5Cfrac%7B1%7D%7Bn%7D%7D)
= ![ln\ 9^{\frac{1}{12}}](https://tex.z-dn.net/?f=ln%5C%209%5E%7B%5Cfrac%7B1%7D%7B12%7D%7D)
=ln (1.2)
= 0.182
Hence, Logarithmic decrement is equal to 0.182