Answer:
The right solution is "0.50 m/s²". A further explanation is provided below.
Explanation:
The given values are:
Mass,
m = 50 kg
Speed,
v = 10 m/s
Rolling friction acting backward (south),
f = 10 N
Air resistance acting backward (south),
= 15 N
The total force acting will be:
⇒ 
On substituting the given values, we get
⇒ 
⇒ 
Now,
⇒ 
On substituting the given values, we get
⇒ 
⇒ 
The horizontal acceleration will be "0.50 m/s²" because the (-)ve sign indicates it in south direction.
Answer:
0.82 m
Explanation:
We are given that
Weight,
=225 N
Length,l=5 m
d=1.1 m
We have to find the distance x for which person weighs 385 N walk on the overhanging part of the plank before it just begins to tip.
Half length=
When system in equilibrium then
The energy changes involved when a positive charge moves because of a nearby, negatively charged object because that is actually similar to when an object falls in a gravitational field, the potential energy of the object will turn in to a kinetic energy. thank you for this question.
let the ron and hermoine apply force along the horizontal direction . let ron pulls in left direction. and hermoine pulls towards right
lets assume that the left direction is taken as negative and right direction as positive.
F = force applied by ron towards left
F' = force applied by hermoine towards right
a = acceleration of the book
m = mass of book
force equation for the book is given as
- F + F' = ma
Given that : F = F'
hence
- F' + F' = ma
0 = ma
a = 0 m/s²
since the book was initially at rest and the acceleration comes out to be zero, hence the book will not move.
so correct choice is
D) The book will not move
