Answer:
T = g μ_s ( M+m )
78.4 N
Explanation:
When both of them move with the same acceleration , small box will not slip over the bigger one. When we apply force on the lower box, it starts moving with respect to lower box. So a frictional force arises on the lower box which helps it too to go ahead . The maximum value that this force can attain is mg μ_s . As a reaction of this force, another force acts on the lower box in opposite direction .
Net force on the lower box
= T - mg μ_s = M a ( a is the acceleration created by net force in M )
Considering force on the upper box
mg μ_s = ma
a = g μ_s
Put this value of a in the equation above
T - m gμ_s = M g μ_s
T = mg μ_s + M g μ_s
= g μ_s ( M+m )
2 )
Largest tension required
T = 9.8 x .50 x ( 10+6 )
= 78.4 N
Answer:
Magnitude of resultant force is 1190.314 N
Direction of force is 13.352°
Explanation:
given data:
thrust force = 725 N
Angle = 32.4 degree
Let x is consider as positive direction
Resultant force in x direction is
Rx = 725 + 513cos32.4 = 1158.14 N
and Resultant force perpendicular to x direction is:
Ry = 513sin32.4 = 274.88 N
Magnitude of resultant force is
and resultant force direction is
Answer:
Explanation:
We know the frequency and the velocity, both of which have good units. All we have to do is rearrange the equation and solve for
λ
:
λ
=
v
f
Let's plug in our given values and see what we get!
λ
=
340
m
s
440
s
−
1
λ
=
0.773
m
Answer:
Explanation:
We are told that the volume of liquid measured is
However, we also know that the beaker is graduated every 1 mL. This means that the sensitivity of the instrument is
This means that we cannot measure the volume of the liquid with a precision better than this value. So, the actual measurement of the liquid volume is
Or, written as interval,
Answer:
4. All of the above
Explanation:
The purpose of striking the ball in a volleyball game:
From the serve you could state that you need to place the ball in motion.
When returning a shot of, you normally want to change the direction of the ball's motion.
During a dropshot, you purposely want to slow down the ball's motion.
The correct answer must be all of the above.
