Question

Some students do a lab experiment to find g the accelerartion due to gravity. The value they came up with experimentally was 11.25m/s2. The actual value for g is 9.81 m/s2. What is their percent error?
a
3.9 %
b
14.7 %
c
1.44 %
d
-6 %

Answer 1

$\frac{11.25 - 9.81}{9.81} \times 100 = 14.7\%$
The answer is (B)

Answer 2

Answer:

b. 14.7%

Explanation:

Experimental value of gravitational acceleration “g” = 11.25 m/s^2

Actual value of gravitational acceleration “g” = 9.81 m/s^2

Percentage error = ((Experimental value – Actual value)/Actual value) × 100

Percentage error = ((11.25 – 9.81)/9.81) × 100                                          

Percentage error = 14.7%  

Hence, the percentage error in the value of “g” will be 14.7%.